N = int(input())
L = list(map(int, input().split()))

if N <= 2:
    print(0)
    exit()
    
count = 0
for i in range(N-2):
    for j in range(i+1, N-1):
        for k in range(j+1, N):
            rod = [L[i], L[j], L[k]]
            condition = set(rod)
            rod = sorted(rod)
            if rod[0] + rod[1] > rod[2] and len(condition) == 3:
                count += 1
                
print(count) N = int(input()) N int(input()) int input() input L = list(map(int, input().split())) L list(map(int, input().split())) list map(int, input().split()) map int input().split() ().split () input split if N <= 2:
    print(0)
    exit()
     N <= 2 N 2 print(0) print 0 exit() exit count = 0 count 0 for i in range(N-2):
    for j in range(i+1, N-1):
        for k in range(j+1, N):
            rod = [L[i], L[j], L[k]]
            condition = set(rod)
            rod = sorted(rod)
            if rod[0] + rod[1] > rod[2] and len(condition) == 3:
                count += 1
                 i range(N-2) range N-2 N 2 for j in range(i+1, N-1):
        for k in range(j+1, N):
            rod = [L[i], L[j], L[k]]
            condition = set(rod)
            rod = sorted(rod)
            if rod[0] + rod[1] > rod[2] and len(condition) == 3:
                count += 1
                 j range(i+1, N-1) range i+1 i 1 N-1 N 1 for k in range(j+1, N):
            rod = [L[i], L[j], L[k]]
            condition = set(rod)
            rod = sorted(rod)
            if rod[0] + rod[1] > rod[2] and len(condition) == 3:
                count += 1
                 k range(j+1, N) range j+1 j 1 N rod = [L[i], L[j], L[k]] rod [L[i], L[j], L[k]] L[i] L i L[j] L j L[k] L k condition = set(rod) condition set(rod) set rod rod = sorted(rod) rod sorted(rod) sorted rod if rod[0] + rod[1] > rod[2] and len(condition) == 3:
                count += 1
                 rod[0] + rod[1] > rod[2] and len(condition) == 3 rod[0] + rod[1] > rod[2] rod[0] + rod[1] rod[0] rod 0 rod[1] rod 1 rod[2] rod 2 len(condition) == 3 len(condition) len condition 3 count += 1 count 1 print(count) print count L = list(map(int, input().split())) list(map(int, input().split())) L rod = [L[i], L[j], L[k]] [L[i], L[j], L[k]] rod rod = sorted(rod) sorted(rod) rod N = int(input()) int(input()) N count = 0 0 count condition = set(rod) set(rod) condition count += 1 1 count
N = int(input())
L = list(map(int, input().split()))

if N <= 2:
    print(0)
    exit()
    
count = 0
for i in range(N-2):
    for j in range(i+1, N-1):
        for k in range(j+1, N):
            rod = [L[i], L[j], L[k]]
            condition = set(rod)
            rod = sorted(rod)
            if rod[0] + rod[1] > rod[2] and len(condition) == 3:
                count += 1
                
print(count)